Machine for forming hooks and eyes upon rods



No Model.)

r 2 Sheetsx-Sheet 1. A G.-MONAHAN.

MAGHINE FOR FORMING HOOKS AND EYES UPON RODS.

Patented Peb. 2o, 1894.

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MACHINE PON BURNING HooKs AND EYES UPON NoDs. No. 515,30Q. l Ptented Feb. "20, 1894.

i l f I UNITED STATES AT ENT' ,AFFICEe CLARENCE MONAHAVN, OF PULLMAN, ILLINOIS.

MACHINE FOR FORNIING HOOKS AND EYES-v UPON` RODS.

SPECIFICATION forming part of Lettere Patent No. 515,300, dated February 20,1894.

Application iiled March 6,;1893. `Serial No.464,686. (No model.)`

To a/ZZ whom, it myconcerle.- I

B e it known that I, CLARENCE MONAHAN, a citizen of the United States, residing at Pullman, county of Cook, and State of Illinois, have invented certain new and useful Improvements in Machines for Forming Hooks and Eyes upon Rods, of which I do declare the following to be a full, clear, and exact description, reference being had to the accompanying drawings, forming part of this specificaion.

My presentinvention has for its object t provide a simple, cheap and durable machine whereby hooks and eyes may be formed upon the ends of rods, and one particular object of my invention is to so construct the dies of my improved machine that the eyes at the ends of the rods may be welded at the same time that they are formed.

My invention consists in the various novel features of construction hereinafterdescribed, illustrated in the accompanying drawings and particularly pointed out in the several claims at the end of this specification.

Figure 1 is a plain View of a machine embodying my invention (parts being omitted). Fig. 2 is a view in vertical central longitudinal section. Fig. 3 is a detail view in vertical section through the dies, said dies shown in closed position.` Fig. Il is a view in horizontal section on line 4--4 of Fig. 3. Fig. 5 is a detail perspective view of the movable head block and the die carried thereby. Fig. Gis a perspective view of the fixed head block and the die carried thereby. Fig. 7 is a view of a rod having a hook formed upon its end by my improved machine. Fig. 8 is a View of a rod having a closed eye formed upon its end by my improved machine.

A designates the main frame of the machine upon the slide ways a of which are` mounted a movable head block B and a stationary head block B. The head block B is reciprocated by any suitable mechanism. In the drawings I have shown this head block as operated by a pitman 2 driven by the crank shaft 3 that is provided with a gear wheel -t that meshes with a pinion 5 upon the main drive shaft 6. The gear wheel 4 is loosely mounted upon the crank shaft 3 but will be connected thereto when desired by the clutch 7 of suitable construction, in manner Well understood in the art. The stationary head block B', can be adj usted back and forth by means of the screw shaft 8 that passes through a threaded extension 9 of the head block, and when this head block has been adjusted to the desired position it will be held by means of the screws 10 that pass through threaded perforations in the end portion a of the main frame. The head block B carries'the die C which is held in place upon the head'block by means of a rib c that enters a dove-tailed groove b formed across the face of the head block, this dovetailedgroove serving to receive the heads of the bolts 12 that pass through the extended ends 13 ofthe die C. By thus connecting the die C with its' head block the die C can be readily set in proper position upon the head block. The top of the die C is formed with a cavity 14e Within which the end of the rod Will be bent in order to form a hook thereon, as will presently more fully appear. The stationary head block B carries a die D that is connected thereto in the same manner as the die C is connected to its cross head. Upon the top of this die D is mounted a bender-bagi E, which co-operates with the cavity 14 of the .dieC in forming the hooks upon the ends of rods. The bender-bar E has a slot e formed therein through which passes a bolt 15 whereby the bender-bar is held firmly upon the top of the die, and a screw 16 that passes through a threaded hole in the raised ear 17 on the top of the die D serves to adjust the benderbar E for the purpose to be presently stated. The end of the bender-bar E is formed with a lip e2 whereon will rest the rod to be bent. A gage plate F is adjustably bolted as at 17 upon the top ot' the head block B', this gage plate having an armf that extends outward to a point opposite the end of the bender-bar E and serves to determine the extent of the end portion of the rod that will be bent.

From the construction of parts as thus far defined it will be seen that if it is desired to form a hook upon the end of a rod, such rod will be placed upon the lip e2 of the benderbar E,'the end of the rod bearing against the arm f of j th'e gage plate F, and with the rod in this position the die C Will advance toward the closed position shown in Fig. 3, thereby causing the end of the bender-bar E, to enter the cavity 14 of the die C and in so doing to TOO bend the end of the rod around and within the walls of the cavity (see dotted lines, Fig. l). My purpose in providing for the adjustment of the bender-bar E is to enable this bar to be adjusted according to the size of the rod to be bent.

In order to complete the bending of the rod so as to forma closed eye, and in order also to weld the end of the rod at the same operation, I have provided the opposing faces of the dies C and D with the grooves illustrated in the drawings. That is to say, the die C has its face formed with ahorizontallycurved groove c2 and the vertical groove c and the die D has its face formed with a corresponding curved groove d and the vertical groove d; the horizontal grooves being so shaped that when the opposing faces of the vdies are brought together as shownin Fig. 4, the semicircular grooves of the dies will form a space for the body of the rod at one side of the dies, while the opposite side of the dies will be practically closed; and the vertical grooves d and c will form a space to receive the eye pin G. The die D is preferably formed with an extension 2O at its base having a groove 2l to receive the bolt 22 carrying the eye pin G. This pin G is held in position by means of a transverse pin 24 that passes through a slot 25 in the bolt 22 of the pin G and through holes in the sides of the extension 20, andthe pin G is forced normally outward from the die D by means of a coil spring 2 When the hook has been formed upon the end of the rod in manner hereinbefore described, and it is desired to close the hook and weld its end to the body of the rod in order to form a closed eye, the hook will be placed over the eye pin G and Will be there held opposite the horizontal grooves c2 and d of the dies, it being understood that at such time the hook portion of the rod is at welding heat. As the die C closes toward the die D the bent end of the rod will be forced by the pin G into the channels c2 of the die C, and the opposite part of the rod will be forced by the pin G into the channels d of the die D and as the bending of the rod toform the eye is thus effected, the free end of the hook will be compressed against and welded to the body of the rod adjacent the open portions of the channels c2 and d. In other words, when the dies have been brought together as just described, the space formed by the channels c2 and d around the eye pin G will correspond to the shape of the eye to be formed upon the end of the rod and inasmuch as the channels of the diel will be made of a size to correspond with the size of the rod upon which the machine is operated, it is manifest that the rod will be so inclosed by the walls of the channels that the free end of the hook will be firmly pressed against and welded to the body of the rod. In practice the hook should be formed of such length that it will lap onto the body of the rod. about the point 30 in Fig. 4, and it will be found that under the pressure of the dies the excess metal will cause a slight extension of the body of the rod. When the eye has been thus formed upon the rod and the movable die C is withdrawn, the spring 26 will force outward the pin G soas to permit the rod to be Withdrawn therefrom.

Having thus described the invention, what I claim as new, and desire to secure by Letters Patent, is-

l. In a machine of the character described, the combination with suitable head blocks or supports, of the dies having their faces provided with the grooves c2 and d to receive the rod and the grooves c and d to receive the eye pin, and a movable eye pin G intermediate said dies, substantially as described.

2. In a machine of vthe character described, the combination with suitable head blocks or supports, of the dies having their faces provided with the grooves c2 and d to receive the rod and theV grooves c and d to receive the eye pin G, and a movable spring actuated eye pin intermediate said dies, substantially as described. v

3. In a machine of the character described, the combination with suitable head blocks or supports of the dies having their faces provided with grooves c2 and d to receive the rod, and the grooves c and d to receive the eye pin, a movable eye pin G intermediatethe dies,said eye pin being provided with a projecting bolt whereby said eye pin will be shifted when the dies are closed, substantially as described.

4. The combination with suitable head blocks or supports of the die C having its face formed with the grooves c2 and c', the die D having its face formed with the grooves d and d', an extension 20, an eye pin G having a bolt 22 carried by said extension 20, and a spring 26 for forcing ou-tward said eye pin, substantially as described.

. The combination with suitable head Y blocks or supports of the die C vhaving its top formed with a cavity 14 and having its faces formed with the grooves c2 and c', a die D hav- IIO ing upon its top a bender-bar E, adapted to CLARENCE MONAHAN.

Witnesses:I j

GEO. P. F1sHER,J r., FRED GERLAGH. 

